import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';

import 'router/router.dart';
// 保存状态存储
import 'package:shared_preferences/shared_preferences.dart';

void main() {
  runApp(MyApp());
  SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle.light);
}

class MyApp extends StatefulWidget {
  MyApp({Key ?key}) : super(key: key);

  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  // 判断是否登录
  bool _ifLogin = false;
  _getLoginState() async {
    _ifLogin = await MTCacheTool.getLoginState();
  }
  
  @override
  void initState() {
    super.initState();
    // 判断是否登录
    _getLoginState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        // 配置入口路由
        debugShowCheckedModeBanner: false,
        // initialRoute: this.s,
        theme: ThemeData(
          //定义主题风格    primarySwatch
          primaryColor: Color(0xff040F22), //默认导航颜色
          canvasColor: Color(0xff040F22), //页面背景
          textTheme: Theme.of(context).textTheme.apply(
                bodyColor: Colors.white,
                displayColor: Colors.pink,
              ),
        ),
        builder: EasyLoading.init(),

        //路由统一处理
        onGenerateRoute: onGenerateRoute);
  }
}
// class MyApp extends StatelessWidget {
//    // 判断是否登录
//   bool _ifLogin = false;
//   _getLoginState() async {
//     _ifLogin = await MTCacheTool.getLoginState();
//   }

//   @override
//   void initState() {
//     super.initState();
//     // 判断是否登录
//     _getLoginState();
//   }
//   // This widget is the root of your application.
//   @override
//   Widget build(BuildContext context) {

    // return MaterialApp(
    //     // 配置入口路由
    //     debugShowCheckedModeBanner: false,
    //     // initialRoute: this.s,
    //     theme: ThemeData(
    //       //定义主题风格    primarySwatch
    //       primaryColor: Color(0xff040F22), //默认导航颜色
    //       canvasColor: Color(0xff040F22), //页面背景
    //       textTheme: Theme.of(context).textTheme.apply(
    //             bodyColor: Colors.white,
    //             displayColor: Colors.pink,
    //           ),
    //     ),
    //     builder: EasyLoading.init(),

    //     //路由统一处理
    //     onGenerateRoute: onGenerateRoute);
//   }
// }

class MTCacheTool {
  // 存储token
  static const String keyToken = 'xxxxxxxxxTK';
  // 存储用户名
  static const String keyUserName = 'xxxxxxxxxUserName';
  static Future<bool> getLoginState() async{
    SharedPreferences sp = await SharedPreferences.getInstance();
    String token = sp.get(MTCacheTool.keyToken) as String;
    // ignore: unnecessary_null_comparison
    if(token == null) {
      return false;
    }
    return true;
  }
}

// 没有登录转跳到登录页面
// String handleToken() async {
//   String token = await handle() ;
//   return token;
// }

// Future<String> getIsLogin() async {
//   final prefs = await SharedPreferences.getInstance();
//   final String? loginInfo = prefs.getString("loginInfo");

//   Map<String, dynamic> user = jsonDecode(loginInfo!);
//   final token = user['token'] ?? '';
//   print('token');
//   print(token);
//   // final token = '';
//   return token;
// }
// Future handleToken() async {
//   final prefs = await SharedPreferences.getInstance();
//   final loginInfo = prefs.getString("loginInfo");
//   if (loginInfo == null) {
//     return false;
//   } else {
//     Map<String, dynamic> user = jsonDecode(loginInfo);
//     final token = user['token'] ?? '';
//     if (token == '') {
//       return false;
//     } else {
//       return true;
//     }
//   }
// }

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}
